NTPC CBT-II 2016 Official Paper (Held On: 18 Jan, 2017 Shift 2) (Previous Year Paper)

Given:

A bag contains notes of Rs. 10, Rs. 20, and Rs 50 in the ratio of 1 : 3 : 5

The total value of money in the bag is Rs. 1920

Calculation:

Let number of notes of Rs. 10, Rs. 20, and Rs 50 be 1x, 3x, and 5x respectively

And the total value of money in the bag is Rs. 1920

⇒ (10 × 1x) + (20 × 3x) + (50 × 5x) = 1920

⇒ 320x = 1920

⇒ x = 6

∴ The number of Rs. 20 notes = 3x

⇒ 3 × 6 = 18

Calculation:

95 out of 200 as a percentage

⇒ (95/200) × 100

⇒ 47.5%

The correct answer is Florence Nightingale.

• The most famous nurse in history, Florence Nightingale is the founder of modern nursing.
• She is known as ‘The Lady with the Lamp’ – she played a significant role during the Crimean War between 1853 and 1856.
• She nursed wounded soldiers at night while carrying a lamp along with her, which led to the famous epithet.

Important Points

Additional Information

• In 1860, Florence Nightingale established her nursing school at St Thomas Hospital, London.
• It is the World’s first nursing school that was in a hospital. Now it is a part of King’s College, London.
• Some books written by the Sarojini Naidu are The Golden Threshold, Mohammad Jinnah: An Ambassador of Unity, The Indian Fantasy, The Royal Tombs of Golconda, The Snake Charmer, etc.

The correct answer is Chemical Change.

• Rusting is an oxidation reaction. When acidic substances (including water) come in contact with metals, such as iron and/or steel, it forms rust.
• Rust is the result of corroding steel after the iron (Fe) particles have been exposed to oxygen and moisture (e.g humidity, vapour, immersion).
• When steel is exposed to water, the iron particles are lost to the water’s acidic electrolytes. The iron particles then become oxidized, which results in the formation of Fe⁺⁺.
• Two electrons are released and flow through the steel to another area of the steel known as the cathodic area.
• Balanced equation: 4Fe + 3O₂ + 6H₂O → 4Fe(OH)₃.

Important Points

Additional Information

• Corrosion prevention processes include the use of paint or metallic coatings are the following:
• Hot-dip galvanizing.
• Zinc thermal spraying.
• Aluminium thermal spraying.

Given:

Lalitha leaves home and drives to her school at a speed of 45 kmph

She reaches 5 minutes later than when she drives at 60kmph speed

Formula used:

D × [(S₂ - S₁)/(S₂S₁)] = (T₂ - T₁)

Calculation:

Here, since reaches 5 minutes late, (T2 - T1) = 5 minutes = 5/60 hours

⇒ D × [(60 - 45)/(60 × 45)] = 5/60

⇒ D × (1/3) = 5

⇒ D = 15

∴ Distance = 15 km

Let, the distance be x km

When speed is 60 km/h, total time to cover the distance = x/60 hours

When speed is 45 km/h, total time to cover the distance = x/45 hours

time difference = 5 min = 5/60 = 1/12 hour

Accordingly,

x/60 + 1/12 = x/45

⇒ x/45 - x/60 = 1/12

⇒ (4x - 3x)/180 = 1/12

⇒ x = 180/12 = 15

∴ The distance to her school is 15 km.

The correct answer is Supreme Court.

• The Supreme court of India decides the disputes regarding the election of the President of India and the election of Vice President of India.
• It is incubated in Article 71(1) of our Indian constitution.
• The judges of the Supreme Court are appointed by the President.

Important Points

• Supreme Court came into existence on 26 January 1950 and is the apex court in India.
• The legislature of the Union, which is called Parliament, consists of the President and two Houses, known as Council of States (Rajya Sabha) and House of the People (Lok Sabha).
• The Lok Sabha (House of the People) is the lower house of the Parliament of India.
• Members of the Lok Sabha are elected by direct election under the universal adult franchise.
• Qualifications for a member of Lok sabha:
• A person must be a citizen of India.
• Not less than 25 years of age.
• The normal term of Lok Sabha is 5 years.
• The ‘Council of States’ is also known as Rajya Sabha.
• The constitution lays down 250 as the maximum strength of the Rajya Sabha, out of which 12 are  nominated by the President from among persons who have achieved distinction in literature, art, science, and social services.
• Qualifications for a member of Rajya sabha:
• A person must be not less than 30 years of age.

Additional Information

• On 29 October 1954, Dr. Rajendra Prasad the first President of India laid the foundation stone of the Supreme Court building.
• The first woman judge of the Supreme Court of India was Fathima Beevi, who was appointed in 1989.
• While not the first in Asia, she holds the distinction of being the first woman Muslim judge to be appointed to any of the higher judiciaries in India.

Concept:

Third Proportional: If three numbers a, b, and c are in proportion, then c = b²/a

Calculation:

Given, the three numbers in proportion are 2.6, 1.3, X

⇒ X = (1.3)²/2.6

⇒ X = 0.65

The correct answer is 1960.

Important Points

• On September 19, 1960, the Indus Waters Treaty (IWT) was signed between India and Pakistan to share water from the Indus river system (IRS).
• The treaty fixed and delimited the rights and obligations of both countries concerning the use of the waters of the Indus River system.
• The IWT allocates waters from three western flowing rivers – Indus, Jhelum, and Chenab to Pakistan barring some limited uses for India in Jammu & Kashmir.
• Under the IWT, India is allowed 3.60 Million Acre Feet (MAF) of storage (0.40 MAF on Indus, 1.50 MAF on the Jhelum, and 1.70 MAF on the Chenab).
• This was signed by former Prime Minister Jawaharlal Nehru and the President of Pakistan, Ayub Khan.
• It was brokered by the World Bank.

Given:

Girish can paint a picture in 4 days when he works for 8 hours per day

He could work for only 6 hours per day and required to finish painting 7 such pictures

Calculation:

Total Hours needed to paint 1 picture = 4 × 8

⇒ 32 hours

According to the question,

He could work for only 6 hours per day

⇒ Number of days required to paint 1 picture = 32/6 days

∴ Number of days required to paint 7 such pictures = (32/6) × 7

⇒ $37\frac{1}{3}$ days

From statement 1 → Using of Electronic book reading has increased during recent times because every one has smart phones and they can easily access all the books and they can store and read when ever they want in an easy manner.

From statement 2 → Books which are printed has become costly.

Conclusions:

I. Nobody reads books nowadays → False (From the both statements there is no information about Nobody reads books nowadays).

II. Electronic book reading is gaining popularity → True (From the statement 1 electronic book reading has increased in recent times, So the statement 1 satisfies this conclusion).

Thus, Only conclusion II follows.

The logic follows here is:-

2 + 3 × 1 = 5,

5 + 3 × 2 = 11,

11 + 3 × 4 = 23,

23 + 3 × 8 = 47,

Similarly,

47 + 3 × 16 = 95

Thus, the correct answer is "95".

The correct answer is Pir Panjal Tunnel.

• India's longest railway tunnel through the Pir Panjal mountain range.
• An 11-km-long tunnel across the treacherous Pir Panjal mountain range on the Banihal-Qazigund railway line in Jammu and Kashmir.
• It is the longest such transportation passage in India and the second-longest in Asia.

Important Points

Additional Information

• Trivandrum Port Tunnel (9,020 meters) located in Kerala.
• It is under construction, will open in 2022.
• Sangaldan Tunnel is completed 2nd longest tunnel (8,000 meters) located in Jammu & Kashmir.
• Bhanwar Tonk Tunnel (1,024 meters) is the shortest tunnel in India located in Chhattisgarh.

Key Points

• The Atal Tunnel, at 9.02 km is the longest highway tunnel in the world, connects Manali to Lahaul-Spiti Valley, India.
• Gotthard base tunnel is the longest and deepest rail tunnel that has officially opened in Switzerland.
• The 57km (35-mile) tunnel will provide a high-speed rail link under the Swiss Alps between northern and southern Europe.

Hence, the logic follows here is :-

Rama is taller than Geetha → (Rama > Geetha).

Vimala is taller than Rama but shorter than Meenu → (Vimala > Rama) and (Vimala < Meenu).

Bindu is taller than Geetha but shorter than Rama → (Bindu > Geetha) and (Bindu < Rama).

From the given question the order follows is :-

Meenu > Vimala > Rama > Bindu > Geetha.

Thus, the shortest person in given people is "Geetha".

The correct answer is Document detailing rare and endangered species of animals, plants, etc.

Important Points

• The Red Data Book is the state document established for documenting rare and endangered species of animals, plants.
• It also deals with fungi as well as some local subspecies that exist within the territory of the state or country.
• This book provides central information for studies and monitoring programs on rare and endangered species and their habits.
• The International Union for Conservation of Nature (IUCN) Red List was founded in 1948.

Key Points

• The Green databook is a small pocket-sized book subjected to environmental data of more than 200 economies.
• It is based on world development indicators like agriculture, forestry, biodiversity, pollution, and sanitation.
• The Blue databook is related to species that are stabilized from endangered species to somewhat better.
• Carbon Black World Data Book is an essential resource for anyone involved in the carbon black industry.
• The Yellow data book extension of the Red book, that provides the CD contains data.

Given:

Principal, P = 10000

Number of years, N = 3 

Amount, A = 11664

Formula used:

A = P[1 + (R/100)]^N

Calculation:

11664 = 10000 × [1 + (R/100)]²

⇒ [1 + (R/100)]² = 11664/10000

⇒ [1 + (R/100)] = 108/100

⇒ (R/100) = (108/100) - 1

⇒ (R/100) = 8/100

⇒ R = 8%

∴ Rate of interest = 8%

Important Points

In the question, the time of investment is given as 3 years. But later in the question, it is given that the amount given is the amount obtained at the end of two years.

Without proper understanding, if you take time = 3 years, the solution will be wrong.

Explanation:

Smallest number of five digits = 10000

Greatest number of four digits = 9999

Now,

The required difference = 10000 - 9999 = 1

The correct answer is Hyderabad.

• National Geophysical Research Institute (NGRI), a constituent research laboratory of the Council of Scientific and Industrial Research (CSIR) was established in 1961.
• The research areas of this institute are ground water-management, artificial recharge, pollutants, natural hazards-earthquakes, tsunami.

Additional Information

The correct answer is Yorkshire.

• In 1992, Sachin Tendulkar became the first overseas-born player to represent Yorkshire, at the age of 19.

Important Points

• Sachin Tendulkar is known as the god of cricket.
• Sachin Tendulkar inherited the title Little Master from cricketer Sunil Gavaskar.

Key Points

• Sachin Tendulkar Played International Cricket For Pakistan Before Making His India Debut.
• Brabourne Stadium hosted a match between the Cricket Club of India (CCI) and Pakistanis on January 20, 1987.
• Sachin Tendulkar to receive Bharat Ratna. At the age of 40, Tendulkar is the youngest to be chosen for Bharat Ratna.

Additional Information

• Sachin Tendulkar and Javed Miandad are the two players, who have represented their respective countries in most (6) World Cup matches.
• Players who represented two countries at the World Cup:
• Kepler Wessels (Australia & South Africa).
• Anderson Cummins (West Indies & Canada).
• Eoin Morgan (Ireland & England).
• Ed Joyce (England & Ireland).

The correct answer is Honey.

• A thick, golden liquid produced by industrious bees, honey is made using the nectar of flowering plants.
• It is saved inside the beehive for eating during times of scarcity.
• Nectar - a sugary liquid - is extracted from flowers using a bee's long, tube-shaped tongue and stored in its extra stomach, or "crop".

Important Points

• Beekeeping is called apiculture.
• A location where bees are kept is called an apiary or "bee yard".

Jute, Rubber, Teak all are plant products.

The correct answer is Silicon.

• Oxygen is the most abundant element in the earth's crust while silicon is second.
• The compound of silicon and oxygen, which is silica, makes up about 60% of this crust.

Important Points

The abundance of elements in Earth's (continental) crust:

Given:

Four bells ring at 16, 24, 36, 42 minute intervals

They ring together at 6.00 a.m

Concept:

Next time when the bells ring together will be the LCM 

Calculation:

To find LCM (16, 24, 36, 42) use prime factorization method:

16 = 2⁴

24 = 2³ × 3

36 = 2² × 3²

42 = 2 × 3 × 7

LCM = 2⁴ × 3² × 7 = 1008

∴ After 1008 minutes the four bells would next ring together

Concept:

Fourth proportional: If 4 numbers a, b, c, and d are in proportion, then d = (b × c)/a

Calculation:

Here, Let the numbers in proportion be 4, 22, c, and 33

⇒ (22 × c)/4 = 33

⇒ c = (4 × 33)/22

⇒ c = 6

∴ The third term is 6

The correct answer is 76.

Important Points

• Halley was last seen in Earth's skies in 1986 and was met in space by an international fleet of spacecraft. It will return in 2061 on its regular 76-year journey around the Sun.
• The radius of Halley's Comet is 5.5 km.
• Halley's comet was discovered in 1758.
• Comet Halley moves backwards (opposite to Earth's motion) around the Sun in a plane tilted 18 degrees to that of the Earth's orbit.

Additional Information

• Comet McNaught was seen over the Pacific Ocean in 2007.
• It was the biggest Comet Measured.

The correct answer is Nico Rosberg.

• Mercedes driver Nico Rosberg was the race winner of the 2016 Formula-1 Rolex Australian Grand Prix.
• Lewis Hamilton started in pole position and finished second in the race.
• Sebastian Vettel finished third for Ferrari.
• Felipe Massa holds the sixth position with Williams-Mercedes.

Important Points

The correct answer is Five.

Important Points

• Five Jantar Mantar is located in New Delhi, Jaipur, Ujjain, Mathura, and Varanasi, all were completed between 1724 and 1735.
• Jantar Mantar is a phenomenal piece of architecture in the form of a sundial.
• It is one of the world's most accurate pre-modern observatories and attests to eighteenth-century efforts to improve understanding of planetary and other cosmic movements.

Additional Information

• Sawai Jai Singh II, the remarkable Monarch of Jaipur and Amber, was a mathematician, an astronomer, and a town planner par excellence.

The logic follows here is:-

Books are written by Author.

Similarly,

Furniture is done by Carpenter.

Thus, the correct answer is "Carpenter".

The logic follows here is :-

Memory Tip :

From above table the logic is :

Thus, the correct answer is 'M'.

Explanation:

Statement I: 

Sasha is girl studying in standard 9

Here is no details that can be used to find the distance

Hence, Statement I is insufficient to answer the question

Statement II: 

Sasa's mother drop her first at school and reaches her office which is 10Km away.

Here, only distance is given but not mentioned between which places

Hence, Statement II is insufficient to answer the question

Statement III: 

Sasa takes 15 Minutes travelling by bus and 30 minutes by cycle

Here, only time is given. There is no information about the speed by which she travels hence distance can't be found

Hence, Statement III is insufficient to answer the question

Therefore, the answer is data insufficient.

Given:

A dozen apples weigh 1.8 kg

3 boxes weighing 23.250 kg each

Formula used:

Number of apples = Total weight of 3 boxes/ Weight of 1 apple

Calculation:

12 apples → 1.8 kg

1 apple → 0.15 kg

3 boxes weighing 23.250 kg each

⇒ Total weight of 3 boxes = 3 × 23.250 = 69.75 kg

∴ Number of apples in 3 boxes = 69.75/0.15 = 465

The logic follows here is:-

8 % 2 & 11 $ 24 & 24 # 6

Insert the given Arithmetic operators from given information.

8 × 2 + 11 - 24 + 24 ÷ 6

Using BODMAS Rule:

⇒ 8 × 2 + 11 - 24 + 24 ÷ 6

⇒ 8 × 2 + 11 - 24 + 4 

⇒ 16 + 11 - 24 + 4

⇒ 31 - 24 ⇒ 7

Thus, the correct answer is '7'.

Given:

10% of a product's cost price is Rs. 1245.80

Loss = 15%

Concept:

If 10% of a product's cost price is x, then cost price of the whole product will be 10x

Formula used:

Loss% = (Loss/C.P) × 100

S.P = C.P - Loss

Calculation:

10% of a product's cost price is Rs. 1245.80

⇒ Cost price of the whole product = 1245.80 × 10 = 12458

Now,

Let the  Loss be represented by L

⇒ (L/12458) × 100 = 15

⇒ L = (12458 × 15)/100

⇒ L = 1868.7

∴  S.P = 12458 - 1868.7 = 10589.3

Selling price (rounded off to the nearest rupee) = 10,589

The correct answer is Shehnai Player.

• The renowned Shehnai exponent Ustad Ali Ahmad Hussain Khan (77) passed away on 16 March 2016, in Kolkata, West Bengal.
• He was known for his innovative style and mastery over the classical, semi-classical, and folk music repertoire.

Important Points

The logic follows here is:-

Stone is Hard.

Similarly,

Feather is Soft.

Thus, the correct answer is 'Feather'.

The correct answer is 1951-52.

Important Points

• The first general election was held in 1951-52 for over four months.
• It is from 25 October 1951 to 21 February 1952.
• The elections were based on universal adult franchise i.e twenty-one years of age or older having the right to vote.
• There were over 173 million voters, most of them poor, illiterate, and rural, and have had no experience of elections.
• The first general elections were marked by an active election campaign by Jawaharlal Nehru.
• The parties contested 489 seats.
• INC won the elections with 364 seats, as the people voted for the party which was led by Jawaharlal Nehru.

The correct answer is Bipin Rawat.

• General Bipin Rawat was the chief of the Indian Army from 31st December 2016 to 31st December 2019.

Key Points

• The Chief of the Army Staff (COAS) is the operational head and highest-ranking officer of the Indian Army.

Additional Information

• General Manoj Mukund Naravane is a Four-Star General of the Indian Army and the 28th Chief of the Army Staff (31st December 2019 - Present).
• General Sir Robert Mcgregor Macdonald Lockhart was the first Commander-in-Chief, Indian Army (15 August 1947 - 31 December 1947).
• India's first female jawan in the Indian army was Shanti Tigga.
• The Chief of Naval Staff is the highest rank in the Indian navy.
• Admiral Karambir Singh is the current chief of naval staff (24th).
• The highest rank attainable in the Indian Air Force is Marshal of the Indian Air Force.
• Rakesh Kumar Singh Bhadauria is the present Air Chief Marshal and took over the office on September 30, 2019.

Given:

160 cycles were sold for Rs. 524,000 

Loss = 10%

Formula used:

Loss % = (Loss/C.P) × 100

S.P = C.P - Loss

Calculation:

160 cycles → 524000

1 cycle → 524000/160

Now,

 (Loss/C.P) × 100 = 10

⇒ (Loss/C.P) = 10/100

Take Loss = 10 and C.P = 100

⇒ S.P = 100 - 10 = 90

S.P for 1 cycle = 524000/160

⇒ 90 →  524000/160

⇒ 100 →  (524000/160) × (100/90)

∴ C.P  of a cycle = 3638.88 = 3639 (rounded off to the nearest rupee)

The correct answer is Article 100.

• Article 100 in The Constitution Of India 1949:
• The Chairman or Speaker shall not allow voting in the first instance but right to have and exercise a casting vote in the case of an equality of votes.
• The House of Parliament consists of the power to act notwithstanding any vacancy in the membership.
• The quorum to constitute a meeting of either House of Parliament shall be one-tenth of the total number of members of the House.
• If there is no quorum during a meeting of a House, then the duty of the Chairman or Speaker is to adjourn the House or to suspend the meeting until appearing a quorum.

Important Points

• Article 101:
• No person will be a member of both Houses of Parliament. This provision is made by Parliament by law for the vacation by a person who is chosen as a member of both Houses of his seat in one House.
• No person will be a member both of Parliament and of a House of the Legislature of a State and if a person is chosen a member both of Parliament and of a House of the Legislature of a State. then, that such period as may be specified in rules made by the President.
• If a member of either House of Parliament —
• They are subject to any of the disqualification by clause (1) or clause (2) of Article 102, or 5.
• His resignation seat by writing under his hand addressed to the Chairman or the Speaker.
• The House may declare his seat vacant If for sixty days a member of either House of Parliament is without permission of the House absent from all meetings:
• Period of sixty days no account will be taken of any period during which the House is prorogued or is adjourned for more than four consecutive days.
• Article 99:
• Oath or affirmation by members either House of Parliament by the rule of the Third Schedule.
• Article 97:
• Salaries and allowances of the Chairman and Deputy Chairman and the Speaker and Deputy Speaker fixed by Parliament by law. Such salaries and allowances are specified in the Second Schedule.

Statement 1-: Surya and his sister are the only children in Ramesh's home.

It means there are only two children in Ramesh's home. Nothing mentioned about their ages.

Statement 2-: Surya's sister is elder to him by 5 years.

It means if we have Surya's age then we can find his sister's age or if we have sister's age then we can find Surya's age.

Statement 3-: Surya's sister just turned 15 this year.

Here Surya's sister age is given.

By combining Statement 2, 3 we can say that Surya's age is 5 years less than his sister, and sister's age given is 15. So Surya's age is 10.

Hence, Statement 2,3 are sufficient.

The correct answer is 12^th March 1930.

• On March 12, 1930, Indian independence leader Mohandas Gandhi begins a defiant march to the sea in protest of the British salt monopoly.
• Britain’s Salt Acts prohibited Indians from collecting or selling salt, a staple in the Indian diet. Citizens were forced to buy the vital mineral from the British.
• Gandhi set out from Sabarmati Ashram, Ahmadabad with 78 followers on a 241-mile march to the coastal town of Dandi on the Arabian Sea.
• They reached Dandi on April 5, Gandhi was at the head of a crowd of tens of thousands. Gandhi spoke and led prayers and early the next morning walked down to the sea to make salt.

Additional Information

• On May 21, the poet Sarojini Naidu led 2,500 marchers on the Dharasana Salt Works, some 150 miles north of Bombay.

Code is given as per the table-:

So, '= [ - +' can be written as '4290'.

Hence, correct answer is option 1.

The correct answer is Gandak.

Important Points

• The River Ganges Tributaries:
• Left: Gomti, Ghaghara, Gandak, Burhi Gandak, Koshi,  Mahananda, Ramganga, Garra.
• Right: Yamuna, Sone, Punpun, Damodar.
• The Beas River (470 km) is a river in north India.
• Source: Rohtang La; Mouth: Sutlej River.
• The Tungabhadra river starts and flows through the state of Karnataka.
• Sources: Tunga, Bhadra; Mouth: Krishna River.
• The Manas (400 km) is the Himalayan foothills river between southern Bhutan and India.
• Source: Himalayas; Mouth: Brahmaputra.

Additional Information

• The Yamuna is the main and the longest (1,376 kilometres) right bank tributary of the river Ganga.
• Rises from Yamunotri glacier near the Banderpoonch peak of the higher Himalayas.
• Ghaghara River is the second-longest tributary of Ganga by length.

As per the conditions given in question-:

1)Terminate J from his job.

This is most suitable option as per the given condition. Since it was first offence of employee so the manager can either dismiss the employee, impose a large fine or give a written warning. So as per his offence this action can be taken by manager.

2)Impose a fine of Rs. 5 on J.

This is not suitable option. Imposing Rs. 5 fine is not a large fine, so manager can't take such action.

3)Call for a meeting and congratulate his behaviour.

This is not suitable option. Since it was first offence of employee so the manager can either dismiss the employee, impose a large fine or give a written warning. Congratulating him means manager is favoring him on his mistakes, which is unacceptable.

4)Call J over the phone and warn him.

This is not suitable option. Since it was first offence of employee so the manager can either dismiss the employee, impose a large fine or give a written warning. Calling J over phone means not taking action as per rules.

Hence, we can say that most suitable option is 1.

The correct answer is Varanasi.

• The Diesel Locomotive Works (DLW) in Varanasi, India, is a production unit owned by Indian Railways, that manufactures diesel-electric locomotives and its spare parts.
• It has made history by converting the diesel loco into electric loco with indigenous technology under the ‘Make In India’ initiative.

Important Points

• Irugur is a panchayat town located in the Coimbatore district of Tamil Nadu, which is famous for its yarn manufacturing and different processing units.
• Secunderabad, also known as the "twin city of Hyderabad".
• Secunderabad is an important commercial centre of Andhra Pradesh.
• Famous places in Secunderabad are Golconda Fort, Hussain Sagar Lake, Birla mandir, Trimulgherry Fort, Saidanimba Tomb, etc.

Key Points

• Dalhousie was the "Father of Indian Railways".
• Chittaranjan, West Bengal is popularly known for the Chittaranjan Locomotive Works.

The correct answer is Chandrabhanga beach, Odisha.

• The International Sand Art Festival was started in 2015 on the Chandrabhaga beach, a short distance from Konark, Odisha.
• It was a part of the Konark Dance Festival that is organized at the same time.

Additional Information

• The Sun temple is very famous in Konark, Odisha.
• Governor of Odisha, Professor Ganeshi Lal, inaugurated the 30th edition of the Konark festival of classical dance.
• The annual 5-day dance festival started on 1st December is being organized in the backdrop of the Sun Temple in Konark, Puri district of Odisha.
• Karwar is named as "Kashmir of Karnataka" by Rabindranath Tagore on his visit to Karwar, Karnataka.

Concept:

On multiplying both numerator and denominator by 1000, the fractions can be avoided

Calculation:

(1.13 + 5.884)/(2.004)

Multiply Numerator and Denominator by 1000

⇒ (1130 + 5884)/2004

⇒ 7014/2004

⇒ 3.50

The correct answer is Phytoplankton.

• Phytoplankton is microscopic marine algae, the base of several aquatic food webs.
• In a balanced ecosystem, they provide food for a wide range of sea creatures like shrimp, snails, and jellyfish.
• The two main classes of phytoplankton are dinoflagellates and diatoms.
• Scientists estimate that 50-80% of the oxygen production on Earth comes from the ocean. The majority of this production is from oceanic plankton — drifting plants, algae, and some bacteria that can photosynthesize.

Important Points

The correct answer is China.

• The production of silk originates in China in the Neolithic (Yangshao culture, 4th millennium BC).
• Silk remained confined to China until the Silk Road opened at some point during the latter half of the first millennium BC.
• According to Chinese myth, sericulture and the weaving of silk cloth was invented by Lady Hsi-Ling-Shih, the wife of the mythical Yellow Emperor who is said to have ruled China in about 3,000 BC.

Additional Information

• The Silk Route was a historic trade route that dated from the second century B.C. until the 14th century A.D.
• It stretched from Asia to the Mediterranean, traversing China, India, Persia, Arabia, Greece, and Italy.
• It was dubbed the Silk Route because of the heavy silk trading that took place during that period.

Given:

In a class of 60 students, 60% are boys

25% of the girls come to school by bicycle

Calculation:

Number of boys = 60% of 60 = 36

⇒ Number of girls = 60 - 36 = 24

Number of girls come to school by bicycle = 25% of 24 = 6

∴ The number of girls who don't come to school by bicycle = 24 - 6 = 18

Given:

Jeeva purchased an article for Rs. 2500 

Sold it at 25% above cost 

Paid a tax of Rs. 125

Calculation:

Jeeva purchased an article for Rs. 2500 

⇒Cost Price for the article, C.P = 2500 

Sold it at 25% above cost 

⇒ Selling Price for the article, S.P = 2500 + [(2500 × 25)/100]

⇒ S.P = 3125

Paid a tax of Rs. 125

⇒ Post tax amount i hand of Jeeva = 3125 - 125 = 3000

∴ Post-tax Profit = 3000 - 2500 = 500

Principal, Teacher and Student are member of school. They all are living things.

Whereas,

School is an institution, which is non living thing.

So, "School" is the odd one.

Shortcut Trick

An odd composite number must not be divisible by 2 and must have more than two factors.

Check the options: 13 and 17 are prime numbers.

12 is an even number.

15 is odd and has factors 1, 3, 5, and 15 (composite).

∴ The correct answer is 15.

Alternate Method

Given: Numbers 13, 17, 12, and 15.

Step 1: Identify Odd Numbers (Numbers not divisible by 2).

⇒ Odd numbers in the list: 13, 17, 15.

Step 2: Identify Composite Numbers (Numbers having more than 2 factors).

⇒ Factors of 13: 1, 13 (Prime)

⇒ Factors of 17: 1, 17 (Prime)

⇒ Factors of 15: 1, 3, 5, 15 (Composite)

Step 3: Combining both conditions.

⇒ Number which is both Odd and Composite = 15.

∴ The correct answer is 15.

Additional Information

Prime Numbers

Numbers that have only two factors: 1 and the number itself. Example: 2, 3, 5, 7, 11, 13, 17.

Composite Numbers

Numbers that have more than two factors. The smallest composite number is 4.

Odd Composite Numbers

The smallest odd composite number is 9 (factors: 1, 3, 9). Other examples include 15, 21, 25, 27.

Special Cases

The number 1 is neither prime nor composite. 2 is the only even prime number.

Statement-: It's saying that research shows that playing outdoors improves the overall health of kids. Nowadays kids do not find time to play outdoors. Which means that we should encourage our kids for playing outdoor, which will improves overall health of kids.

Conclusion 1-: This does not follows. It's given in statement that playing outdoors improves the overall health of kids. So encouraging indoor games is opposite to statement.

Conclusion 2-: This does not follows. In given statement there is nothing mentioned about not sending kids to school. It is not favoring the statement which is saying to improve improve overall health by playing outdoors.

Conclusion 3-: This conclusion follows. Make playing outside compulsory means to encourage outdoor games, which will improve overall health of kid.

Conclusion 4-: This does not follows. In given statement, there is nothing mentioned about parents office hours rescheduling. Without changing office hour they can also do that, so it's not favorable to do that.

Hence, most suitable conclusion is 3.

The correct answer is Research and Analysis Wing.

Key Points 

• RAW (Research and Analysis wing) is India’s External Intelligence agency.
• It is Headquartered in New Delhi.
• RAW came into being on September 21st, 1968, after the Sino-Indian war of 1962 and the India-Pakistan war of 1965, which exposed gaps in intelligence gathering undertaken by the Intelligence Bureau.
• RAW's first director was Rameshwar Nath Kao.
• The head of RAW is called the "Secretary" (research) in the cabinet secretariat.
• The current chief of RAW is Ravi Sinha.
• RAW used to hire people only from IB (Intelligence Bureau), Indian police services, and Indian military or revenue departments.
• In fact, RAW is only answerable to the Prime Minister of the country, and the Joint Intelligence Committee.
• In 1971, RAW played an important role in supporting Mukti Bahini a Bangladeshi guerrilla organization by providing them training, intelligence, and ammunition.
• In 1984 RAW involved in operation Meghdoot.
• RAW kept India’s first nuclear test secret successfully i.e. Operation Smiling Buddha.

The correct answer is Cookies.

• A cookie is a small piece of text sent to the browser by a website user visit.
• It helps the website to remember information about user visits, like user preferred language and other settings.
• Cookies can make user's next visit easier and the site more useful to the user.
• Specific cookies known as HTTP cookies are used to identify specific users and improve your web browsing experience.

The correct answer is Battery.

• A battery is a device that stores chemical energy and converts it to electrical energy.
• The chemical reactions in a battery involve the flow of electrons from one material (electrode) to another, through an external circuit.
• Energy using an electrochemical oxidation-reduction (redox) reaction.
• The flow of electrons provides an electric current that can be used to do work.

Important Points

Key Points

The most familiar example of this type is the dry cell (known as Leclanche cell after its discoverer) which is used commonly in our transistors and clocks. 

• The cell consists of a zinc container that also acts as an anode and the cathode is a carbon (graphite) rod surrounded by powdered manganese dioxide and carbon.
• The space between the electrodes is filled by a moist paste of ammonium chloride (NH4Cl) and zinc chloride (ZnCl2).

The correct answer is Martina Hingis / Sania Mirza.

• Sania Mirza (India) and Martina Hingis (Switzerland) pair won the 2015 Women’s Doubles title of China Open.
• In the final match, they defeated Chinese pair Hao-ching and Chan Yung-Jan.
• It was played on outdoor hard courts in Beijing.

Additional Information

• 2015 Men’s Doubles title of China Open:
• Vasek Pospisil (Canada) and Jack Sock (US) pair won by defeated Daniel Nestor (Canada) and Édouard Roger-Vasselin (France).
• 2015 Men’s Singles title of China Open:
• Novak Djokovic of Serbia won by defeated Rafael Nadal of Spain.
• 2015 Women’s Singles title of China Open:
• Garbiñe Muguruza of Spain won by defeated Tímea Bacsinszky of Switzerland.

The correct answer is Lord William Bentinck.

• On December 4, 1829, Governor-General of Bengal, Sir William Bentinck brought out the Sati Regulation Act.

Important Points

• Raja Ram Mohan Roy was the social reformer who worked hard for the abolition of this 'Sati Pratha' ritual.
• Ram Mohan Roy was given the title of 'Raja' by Akbar II, the Mughal emperor, who sent him to England to represent him.
• He started India’s first English medium school in 1816 in Kolkata that later came to be known as the Anglo-Hindu school.
• Roy founded the Brahmo Samaj in 1828. This move is often credited with playing an important role in reforming and modernizing Indian society.
• He is often called the 'Father of Indian Renaissance'. Freedom fighter Gopal Krishna Gokhale called Roy the 'Father of Modern India'.

Key Points

• 'Sati pratha' was a Hindu ritual where the widow had to sit on her husband's funeral pyre and burn alive.
• The Portuguese banned the practice in Goa by 1515.
• In the 16th century, Humayun was the first to try a royal agreement against the practice. Akbar was next to issue official orders prohibiting Sati and since then it was done voluntarily by women.

Given:

The ratio between the length and breadth of a rectangular board is 7 : 5

The breadth is 20.5cm

Calculation:

Let the length and breadth be 7x and 5x respectively

⇒ 5x = 20.5

⇒ x = 4.1

∴ The length = 7x

⇒ 7 × 4.1 = 28.7

Short Trick:

Ratio is 7 : 5

5 = 20.5

1 = (20.5/5)

7 = (20.5/5) × 7 = 28.7

Given:

Purchased 132 dozens of mangoes at Rs. 475

Sold only 125 dozens at Rs. 530 per dozen

Calculation:

Purchased 132 dozens and Sold only 125 dozens

⇒ Stock of mangoes in hand = 132 - 125 = 7 dozens

⇒ Value per dozen = Rs. 475

∴ Value of Sock of mangoes in hand = 7 × 475 = 3325

Equation given:- 10 + 3 - 6,

Interchange the sign:- '+' becomes '-' and '-' becomes '×'

After changing signs according to question we get following equation-:

10 - 3 × 6

= 10 - 18

= -8

Hence, correct answer is -8.

Calculation:

(3.2 × 10⁴) ÷ (2 × 10⁵)

⇒ (32 × 10³)/(2 × 10⁵)

⇒ (32 × 103) / (2 × 10⁵)

⇒ 16/10²

The correct answer is Compiler.

• A compiler takes the program code (source code) and converts the source code to a machine language module (called an object file).

Important Points

Additional Information

• Another specialized program, called a linker, combines this object file with other previously compiled object files (in particular run-time modules) to create an executable file.

Matches are played between:-

1 Vs 2, 3 Vs 4, 5 Vs 6, 7 Vs 8, 9 Vs 10, 11 Vs 12, 13 Vs 14, 15 Vs 16

Lower ranked team always wins. For eg-: In Team-1 Vs team-2 match team-2 wins.

So,

1 ⇔ 2 - Team 2 wins

3 ⇔ 4 - Team 4 wins

5 ⇔ 6 - Team 6 wins

7 ⇔ 8 - Team 8 wins

9 ⇔ 10 - Team 10 wins

11 ⇔ 12 - Team 12 wins

13 ⇔ 14 - Team 14 wins

15 ⇔ 16 - Team 16 wins

Thus 2, 4, 6, 8, 10, 12, 14, 16 wins.

Again matches are played between:-

2 Vs 4, 6 Vs 8, 10 Vs 12, 14 Vs 16

2 ⇔ 4 - Team 4 wins

6 ⇔ 8 - Team 8 wins

10 ⇔ 12 - Team 12 wins

14 ⇔ 16 - Team 16 wins

Lower ranks wins that is - 4, 8, 12, 16 i.e. we have 4 teams which play semifinal.

So semis played between:- 4 and 8, 12 and 16.

4 ⇔ 8 - Team 8 wins

12 ⇔ 16 - Team 16 wins

Thus Team 12 and team-16 will play semifinal since team-4 and team-8 is not given in options.

Hence, Correct answer is option 1.

Confusion PointsAfter semifinal Team-8 and Team -6 will win.

So these teams will play final.

Given:

A trip from Mumbai to Pune takes 4 hours 30 minutes at a speed of 60 km/hr

Concept:

Distance will be the same. Only speed and time change.

Formula used:

Distance = Speed × Time

Calculation:

Time = 4 hours 30 minutes = 4.5 hours

Speed = 60 km/hr

Distance = 4.5 × 60 = 270 km

Now, if the speed is 15 m/sec:

15m/sec = 15 × (18/5) km/hr

⇒ 54 km/hr

Time to travel 270 km with speed 54 km/hr:

Time = 270/54 = 5 hours

The pattern followed here is-:

Hence, the correct answer is 48.

The correct answer is Constellation.

• Ursa Major constellation lies in the northern sky. Its name means “the great bear,” or “the larger bear” in Latin.
• Ursa Major is the largest northern constellation and third largest constellation in the sky.
• Its brightest stars form the Big Dipper asterism, one of the most recognizable shapes in the sky, also known as the Plough.
• Ursa Major contains seven Messier objects. It also contains 13 stars with confirmed planets.

Important Points

• The biggest known galaxy is IC 1101, which is 50 times the Milky Way's size and about 2,000 times more massive.
• It is about 5.5 million light-years across.
• Our Sun (a star) and all the planets around it are part of a galaxy known as the Milky Way Galaxy.
• A galaxy is a large group of stars, gas, and dust bound together by gravity. The Milky Way is made up of about 90% dark matter, the matter which cannot be seen, and about 10% “luminous matter”, or matter that we can see with our eyes.
• The solar system lies about 30,000 light-years from the galactic centre.

Additional Information

• Sirius, also known as the Dog Star or Sirius A, is the brightest star in Earth's night sky.
• The name means "glowing" in Greek.

We have to replace # signs according to option and get a balanced equation-:

1. - ÷ + =

24 # 8 # 4 # 10 # 2

24 - 8 ÷ 4 + 10 = 2

24 - 2 + 10 = 2

34 - 2 = 2

32 ≠ 2 (We are not getting balanced equation.)

2) + = + -

24 # 8 # 4 # 10 # 2

24 + 8 = 4 + 10 - 2

32 = 14 - 2

32 ≠ 12 (We are not getting balanced equation.)

3) = × - +

24 # 8 # 4 # 10 # 2

24 = 8 × 4 - 10 + 2

24 = 32 - 10 + 2

24 = 34 - 10

24 = 24 (Here we get balanced equation.)

4) + × = +

24 + 8 × 4 = 10 + 2

24 + 32 = 12

56 ≠ 12 (We are not getting balanced equation.)

Hence, the correct answer is option 3.

The correct answer is SEBI (Securities and Exchange Board of India).

Key Points

• The Securities and Exchange Board of India (SEBI), was initially constituted on April 12, 1988.
• SEBI is the regulatory body for dealing with all matters related to the development and regulation of the securities market in India.
• SEBI is situated in Mumbai with its regional offices at Kolkata, Delhi, and Chennai.
• SEBI is managed by six members:
• one chairman (nominated by Central Government), two members (officers of central ministries), one member (from RBI), and the remaining two members are nominated by Central Government.
• SEBI’s primary functions include protecting investor interests, promoting and regulating the Indian securities markets.
• All financial intermediaries permitted by their respective regulators to participate in the Indian securities markets are governed by SEBI regulations.

Important Points

The correct answer is Palk Strait.

• Palk Strait is a strait between the Tamil Nadu state of India and the Mannar district of the Northern Province of Sri Lanka.
• It connects the Bay of Bengal in the northeast with the Palk Bay and then with the Gulf of Mannar in the southwest.
• The strait is named after Robert Palk.

​

Important Points

• A Strait is a narrow channel of the sea joining two larger bodies of water.
• It most commonly refers to a channel of water that lies between two landmasses.

Additional Information

• Adam's Bridge, also known as Rama's Bridge or Rama Setu, is a chain of limestone shoals, between Pamban Island (known as Rameswaram Island), and Sri Lanka.
• It is created across the sea connecting Pamban Island in Tamil Nadu to Mannar Island in Sri Lanka.

The correct answer is Elias Howe.

• Elias Howe patented the first-ever lockstitch sewing machine in the world in 1846.
• His invention helped the mass production of sewing machines and clothing.

Important Points

Additional Information

• List of some scientists and their invention:

Given:

A cyclist covers a distance of 14 km in 25 minutes

Concept:

Speed will be the same

Formula used:

Speed = Distance/Time

Calculation:

Distance = 14 km

Time = 25 minutes = 25/60 hours

Speed = 14/(25/60)

⇒ Speed = 33.6 km/hr

Now, Distance covers in 18 minutes (18/60 hours):

Distance = 33.6 × (18/60)

⇒ Distance = 10.08 km

The correct answer is Red, Green, Blue.

• Red, green, and blue are the primary colours of light—they can be combined in different proportions to make all other colors.
• There are two colour models:
• Light Color Primaries (Red, Green, Blue).
• Pigment Color Primaries (Cyan, Magenta, Yellow).

Important Points

• Primary colours make all other colours:
• Red + Green = Yellow.
• Green + Blue = Cyan.
• Blue + Red = Magenta.
• There are three Secondary Colors (S'): Orange, Green, Violet.
• There are six Tertiary Colors (Ts): Red-Orange, Yellow-Orange, Yellow-Green, Blue-Green, Blue-Violet, Red-Violet.
• Tertiary is formed by mixing a primary with a secondary.

Additional Information

• In terms of wavelengths, visible light ranges from about 400 nm to 700 nm.
• light with a wavelength of about 400 nm is seen as violet, and light with a wavelength of about 700 nm is seen as red.

Key Points

• The inner surfaces of human eyes contain photoreceptors—specialized cells that are sensitive to light and relay messages to the brain.
• There are two types of photoreceptors: cones (which are sensitive to colour) and rods (which are more sensitive to intensity).
• Humans are able to see an object when light from the object and enters their eyes and strikes these photoreceptors.

The correct answer is Methyl Mercury.

• Minamata disease (Chisso-Minamata disease), is a neurological syndrome caused by severe mercury poisoning.
• Symptoms include ataxia, numbness in the hands and feet, general muscle weakness, narrowing of the field of vision, and damage to hearing and speech.
• Minamata disease was first discovered in Minamata city in Kumamoto prefecture, Japan in 1956.
• It was caused by the release of methylmercury in the industrial wastewater (point source pollution) from the Chisso Corporation's chemical factory, which continued from 1932 to 1968.
• This highly toxic chemical bioaccumulated in shellfish and fish in Minamata Bay and the Shiranui Sea, which when eaten by the local populace resulted in mercury poisoning.
• A second outbreak of Minamata disease occurred in Niigata Prefecture in 1965.

Important Points

The correct answer is Composting.

• The definition of compost means to mix vegetables and other organic waste together and to let them decompose.
• Compost is a mixture of organic residues (manure, animal carcasses, straw, etc.) that have been piled, mixed, and moistened to undergo thermophilic (high heat 113 to 160 degrees Fahrenheit) decomposition.
• This publication pertains to composting animal manures.
• Compost, manure, and fertilizer are materials that enrich the soil with nitrogen, phosphorus and potassium, and other nutrients.

Important Points

Given:

Simple Interest (S.I) = 400

Principal, P = 4000

Rate of Interest, R = 6%

Formula used:

S.I = (P × R × T)/100

Calculation:

S.I = (P × R × T)/100

⇒ Period, T = (100 × S.I)/(P × R)

⇒ T = (100 × 400)/(4000 × 6) 

⇒ 10/6 years

⇒ T = (10/6) × 12 months

∴ Period = 20 months

Given:

Principal amount = P

Rate of interest, R = 5%

Time period, T = 2 years

Formula used:

When compounded half yearly,

Amount, A = P [1 + (R/200)]^2T

Calculation:

A = P[1 + (5/200)]^{2 × 2}

⇒ A = P(1 + 0.025)⁴

⇒ A = P(1.025)⁴

∴ The amount received at the end of 2 years is P(1.025)⁴.

The angle between the hour hand and minute hand = (30H - 11M/2)

Here, H = hour M = Minute

At 2'O clock

H = 2 and M = 0

So, (30 × 2 - 11 × 0/2)

or (60 - 0)

or 60º

Now reflex angle is = 360º - 60º = 300º

Hence, correct answer is 300º.

The correct answer is Kosala.

• Kosala, the ancient kingdom of northern India, roughly corresponding to the historical region of Oudh, it is now south-central Uttar Pradesh state.
• Kosala extended across both banks of the Sarayu (modern Ghaghara) River and north into what is now Nepal.

Important Points

• Saadat Ali Khan was the first Nawab of Awadh.
• The Nawab of Awadh is a title that was given to the rulers of the Indian princely state of Awadh or Oudh, as it was referred to by the British.

Additional Information

• The famous ruler of the Kosala Kingdom was King Prasenajit during the 6th century BCE.

The correct answer is 12, 15, 1, 14.

• There are 26 alphabets in the English language.
  

1.A, 2.B, 3.C, 4.D, ..., 24.X, 25.Y, 26.Z.

So, according to the above serial number,

• "L" belongs to 12,
• "O" belongs to 15,
• "A" belongs to 1,
• "N" belongs to 14.

The correct answer is Two.

• The heart of the fish has two chambers namely:
• Atrium
• Ventricle
• Valves between the chambers and contraction of all chambers except the bulbs maintain a unidirectional blood flow through the heart.
• The blood from the body, which is low in oxygen enters the atrium via the sinus venosus, which contains the pacemaker cells that initiate the contractions. The blood is pumped into the ventricle by the atrium, which is a thin-walled muscular chamber.

Important Points

• Amphibians and reptiles have three-chambered hearts.
• Birds have four-chambered hearts.
• Worms and their ilk have one chamber heart.
• Humans have 4 chambered heart.
• The flow of the blood is given as follows:
• Blood enters the right atrium and passes through the right ventricle.
• The right ventricle pumps the blood to the lungs where it becomes oxygenated.
• The oxygenated blood is brought back to the heart by the pulmonary veins which enter the left atrium.
• From the left atrium, blood flows into the left ventricle.
• The left ventricle pumps the blood to the aorta which will distribute the oxygenated blood to all parts of the body.

The correct answer is 25.

• The individual should be at least 25 years of age or more to become the Chief Minister of any state in India.

Important Points

• Chief Minister is the elected head of the state government.
• A person has to meet a certain set of qualifications to be eligible for the position of a Chief Minister:
• To be a citizen of India is the fundamental criterion.
• Should be at least 25 years of age or more.
• Should be a member of the state legislature.

Additional Information

• Article 154 of the Indian Constitution gives executive power of the State to the Governor.
• The Governor of a State is appointed by the President for a term of five years and holds office during his pleasure.
• Only Indian citizens above 35 years of age are eligible for appointment to this office.

Given:

Hira decides to pack 165 mangoes in boxes that can hold 18 each

Concept:

On dividing 165 by 18, the remainder will give the number of mangoes gave away.

Calculation:

On dividing 165 by 18, the remainder = 3

∴ The number of mangoes gave away= 3

[OR]

18 × 9 = 162

⇒ 162 mangoes will be carried in 9 boxes

∴ The number of mangoes gave away = 165 - 162 = 3

The correct answer is Keshav Bansal.

• In 2016, Keshav Bansal bought the IPL franchise of Gujarat Lions.
• He was the youngest (age of 24) owner of an IPL team.
• He has won many awards like ‘Young Entrepreneur of the Year 2013’ award by NCN Magazine, ‘Amity Leadership Award for Business Excellence’, 2016 and was also included in GQ India magazine as one of the 50 most influential young Indians.

Important Points

• Jay Mahata is a co-owner of the Indian Premier League team Kolkata Knight Riders Along with actor Shahrukh Khan.
• Subrata Roy is the owner of Pune Warriors India.
• List of IPL Team owners:

Additional Information

• Ambani owns the Mumbai Indians team in the Indian Premier League.
• He is the richest IPL owner.

From the figure we can see that Shipra is facing south when she reached her grandmother's door entrance, so the door must be facing towards north.

Hence, "North" is the correct answer.

After rearrangement

OHOT → HOOT

ETRE → TREE

OTOR → ROOT

DESE → SEED

Except HOOT, other words are related to each other but HOOT means cry or musical sound.

Hence, OHOT is the correct answer.

Given:

'K' can do 3/4thof a work in 6 days 

 'J' can do 2/5thof the same work in 4 days

Formula used:

Number of days = Total work/1 day's work (Efficiency)

Calculation:

K can do the whole work alone in [(6 × 4)/3] days

⇒ K → 8 days

J can do the whole work alone in [(4 × 5)/2] days

⇒ J → 10 days

Total work = LCM (8, 10) = 40 unit

⇒ 1 day's work of K = 40/8 = 5 unit

⇒ 1 day's work of J = 40/10 = 4 unit

⇒ 1 day's work of (K + J) = 5 + 4 = 9 unit

∴ Number of days = 40/9

⇒ $4 \frac{4}{9}$ days

Given:

LCM = 40 times HCF

The product of the numbers is 1440

Formula used:

LCM × HCF = Product of numbers

Calculation:

Let HCF of the number be 'H'

⇒ LCM = 40H

Now,

LCM × HCF = Product of numbers

⇒ 40H × H = 1440

⇒ H² = 1440/40 = 36

⇒ H = 6

∴ HCF = 6

The correct answer is Garrett Morgan.

• On November 20, 1923, the U.S. Patent Office grants to 46-year-old inventor and newspaperman Garrett Morgan for his three-position traffic signal.
• Morgan's design used a T-shaped pole unit with three positions. Besides "Stop" and "Go," the system also first stopped traffic in all directions to give drivers time to stop or get through the intersection.

Key Points

• John Peake Knight credited with inventing the traffic light in 1868.
• The first traffic signal was invented by J P Knight, a railway signalling engineer.
• It was installed outside the Houses of Parliament in 1868 and looked like any railway signal of the time, with waving semaphore arms and red-green lamps, operated by gas, for night use.
• George Eastman, an American entrepreneur, and inventor whose introduction of the first Kodak camera helped to promote amateur photography on a large scale.
• Robert Adler invented the first practical, wireless television remote control. Introduced as the "Space Command" by Zenith in 1956.

The correct answer is Uttar Pradesh.

• The largest sugarcane producing state of India is Uttar Pradesh.
• It is estimated to have a sugarcane area at 23.60 lakh hectares.

Additional Information

• Florida is the largest cane-producing region in the United States.
• Brazil is the world's largest sugar producer.
• India is the second-largest producer of sugar in the world after Brazil and is also the largest consumer.